If you can't judge a book by its cover, some books at least have covers so perfect that they make you sorely regret it. Today, we want to know your pick for the greatest book cover of all time.

Tell (and show!) us in the comments what the best book cover you've ever seen is, and then tell us what makes it so perfect. Is it the design? Does it add something unexpected to the story? Maybe there are even some clues to the plot hidden in there? Be sure to star your favorites, too!